Lock.



PATENTED APR. 23, 1907.

F. J. VIEWEG.

LOCK.

APPLIOATION rum) NOV. 7, 1905.

a SHEETS-SHEET 1.

m: Nvxms PETERS cc., WASHINGTON, 0. c.

P. J. VIEWEG.

LOCK.

APPLIOATION IILED NOV.7,1905.

3 SHEETS-SHEET 2.

ca, WASHINGTON, n. c.

No. 851,575. PATENTED APR. 23, 190?. f

P. J. VIEWVBG.

LOCK.

APPLICATION IILED NOV. 7, 1905.

3 SHEETS-SHEET 3.

w vbnesoeo 81455545555 1n: NORRIS PETERS 50., WASHINGTON, n. c.

FRED J. VIEWEG, OF PLAINFIELD, NEW JERSEY.

LOCK.

Specification of Letters Patent.

Patented April 23, 1907.

Application filed November '7, 1905. Serial No. 286,195.

To all whom may concern:

Be it known that I, FRED J. ViEwEe, a citizen of the United States of America, and a resident of Plainfield, Union county, New Jersey, have invented certain new and useful Improvements in Locks, of which the following is a specification.

The present invention relates generally to locks, and has more particularly reference to certain improvements in combination looks more fully hereinafter described.

The present invention is in line with or forms a continuation of certain improvementsheretofore made by me and disclosed in Letters Patent 785132, in Letters Patent No. 805687 and in another application filed May 26, 1905, Serial No. 262337.

lVhen combination locks are applied to use in oflice buildings, for gymnasium lockers, or other similar purposes, it is desirable to have a combination common to all the locks, in addition to their individual combination, so that each lock may be opened by the janitor, in a manner similar to the master key system now in use on locks opened by keys.

One object of the present invention is to provide a combination lock, which can be operated to retract the bolt by two different combinations from the same side of the door, and further that either of said combinations may be found by turning the same knob.

In locks of this character adapted to be operated by turning the knob in a certain manner to strike the combination, it is highly desirable that automatic means should be provided whereby the bolt will be automatically locked immediately after it is retracted, so that the person opening the lock necessarily looks it again without any further intervention 011 his part. The second object of my invention is therefore to provide a lock having a belt, a combination device, and means for automatically locking the bolt, all of said elements being controlled by the same knob, and the said devices acting progressively in the order named upon the proper manipulation of the knob. Preferably this object is attained by providing a switch, which will automatically prevent a member forming part of the combination device from returning to its original path after the combination is found, and preferably the spring of the bolt is utilized to throw the said member out of operative position when the knob is released.

A further object of the invention resides in the peculiar construction of the cam used as a part of the combination device. Heretofore, and in the prior art, great di'lliculty has been experienced in developing the cam surfaces of these cams, inasmuch. as the labyrinth of grooves of each cam must be an arbitrary one in order to give it a distinctive character and a combination of its own. It has been the practice, heretofore, to develop these cam surfaces without any rational system, and each cam therefore has to be fitted and tried and fitted again in order to cause the pin or other member to travel in such a manner through the cam grooves as to leadit to the combination point when the cam is properly operated. This has been a great detriment to the development of locks of this character, as it increases the expense of producing the same to a very great extent. To obviate this, I provide a cam having an arbitrary labyrinth of grooves composed of portions of a constant configuration connected by intermediate passages. The constant configuration may be in. the form of concentric circles, ellipses, etc., but preferably I use a spiral, as grooves formed on a spiral give the easiest and most gradual progression to the pin. By this means and by subdividing the disk into units of distance, any combination within the limits of the disk may be quickly and accurately plotted.

The above-mentioned improvements are claimed broadly in the present application, and I do not desire to limit myself so far as these improvements are concerned to any particular form of combination lock. The said improvements are, however, embodied in a desirable and preferred construction which involves novel and valuable features in itself. This construction is shown m the accompanying drawings, which form a part of this specification and to which reference is made, and has been especially designed for use on gymnasium lockers or the like, where it is desired to operate the bolt "from one side of the door only. The particular features residing in said specific construction consist more particularly in mounting a connection on the bolt itself and preferably on the bolt head proper,-though not necessarily so, the said connection being in constant engagement with the movable member, such as a cam disk, operable by turning the knob, and adapted to play idly in the grooves formed in the said cam disk, without moving the said bolt until the combination is struck, when the said cam. disk or other member is locked with the connection carried by the bolt, so to cause the retraction of the said bolt. It will be understood that this construction involves very few parts, and is therefore cheap to manufacture. '7

Other features of construction and com.- binations of parts will appear the specification proceeds.

In the accompanying drawings: Figure 1 shows a side elevation, partly in section, of a lock embodying the invention. Fig. 2 is a transverse sectional view taken on the irregular line 2-2 of Fig. 1. Fig. 3 is a fragmentary view of the parts shown in Fig. 1, showing the bolt. in. its retracted position. Figs. 4 and 5 are detail views showing the cam disks which may be and are used in. connection with my invention. Fig. 6 is a transverse sectional view showing the master combination device. Fig. 7 is a side elevation of the lock shown in Fig. 6 with the knob re-- moved.

Similar characters of reference indicate corresponding parts in the several views.

1 indicates a casing in which is mounted a bolt 2 having a rearwa'rdly extending guide 3 sliding in the ways 4 on the casing, and normally held against retraction by means of the spring 5. Mounted upon this bolt and preferably upon the bolt head proper by means of the pivot 6, is the connection 7 provided at its outer end with the pin 8 adapted to be in constant engagement with the grooves of a movable member, such as the cam disk 9, which is adapted to be operated by turning the knob. lhis knob, which is indicated in Fig. 6 at 10, is mounted upon the spindle 11 provided with a key 12 adapted to .fit into one of the radial grooves 13 formed in the cam disk, whereby when the knob is turned, the cam disk will follow its movement in either direction.

The cam disk is provided with a labyrinth of grooves as indicated in Fig. l, in which the pin 8 on the connection 7 is adapted to travel when the knob is turned. By turning the said knob on the proper combination, that is: a predetermined number of times, and a predetermined distance in opposite directions, the said pin. will be caused to travel up to the shoulder 14, thereby locking the said connection with the cam disk, which then acts as a crank disk to retract the bolt. In my prior application, Serial No. 262337, an approach is made to this construction, as the connec tion which engages the cam disc is mounted on the roll-back forming a part of the latch mechanism. The present structure is distinguished by the omission of the roll-back.

As in application Serial No. 262337, filed May 26, 1905, the cam disk in the present application is provided with notches 15 which serve to indicate the unit of distance of its rotation or the number of times the knob is turned by means of the spring pawl 16, which clicks into each notch as it comes in alinementwith the same, and thereby indicates to the operator the number of units of distance traversed, and enables him to properly operate the combination. Any other indicating or guiding means may of course be used in place of this. Also as disclosed in the said application referred to, positive means are provided for guiding the pin when. properly operated, and for misleading the pin when the combination is improperly operated. These means in this application, as in the prior application, take the form of tapered surfaces indicated as at 17 over which the pin is adapted to travel, and is prevented from going back again, owing to the sudden drop when the summit of the taper is reached. In the construction shown in my saidformer application, the falling of the pin after reaching the summit of the taper produces a clicking sound, which-might enable an unauthorized person to detect the combination, and for that reason, I there employed a safety means, taking the form of a second connection and pin traveling in said grooves to offset the clicking of the first connection.

In the present application, I do away with the use of a second link or connection, by forming a depression or a hole 18 in the cam disk below the normal level of the grooves, and directly adjacent to the summit of each taper, so that as the pin drops it' will not strike against any surface, and in this way the clicking is prevented. Further, as in. said. application above referred to, it is necessary to provide some means for properly holding the pin on the connection in engagement with. the working shoulder 14, when the bolt is retracted. In addition thereto, however, andv to cause the bolt to be locked immediately upon its retraction when the knob is released, there is provided a switch 21 on the casing, provided with a tapered surface 22, leading up to a flat surface 23. Adjacent to these tapered and flat surfaces of the switch, there is a cam surface 24 against which the pin 20 on the other side of the connection 7 acts during the retraction of the bolt. The switch is pivoted as at 25, and held properly in position by means of the spring 26 or otherwise. Adjacent to the switch is a projection or lug 19 on the casing of the same'h'eight as the flat surface 23.

As indicated in Fig. 1, when the pin 8 has reached the shoulder 14:, the pin 20 will encounter the cam surface 24 of the switch, and

during the retraction of the bolt, the said,

switch will move out of the way to allow of the passage of the pin, whereby the latter will travel. into the position indicated in Fig.

3, where it is shown as resting on. the lug 19, while the switch will automatically snap in behind the pm and prevent it from returning to its original path. Now, upon releasing the knob, the bolt spring 5 will move the bolt into its locked position and will cause the said pin to move out through the passage 27 into the outer groove of the cam disk, while the pin 20 engages with the cam surface 24-a on the other side of the switch. Obviously, this is of great advantage as the device in this manner locks itself automatically Without any further act or step on the part of the operator.

Figs. 6 and 7 show a construction whereby a master combination can be included in the lock, so as to enable a person knowing the said master combination to open the lock without knowing the individual combination of the lock. This device consists of two labyrinths of grooves, 28 and 29, which conveniently may be and are embodied in the same cam disk 30, one on each side. and 5 may and do represent the two faces oi" the said disk.

Following out the simple construction shown in Figs. 1 and 2, the bolt 31 is here provided withtwo connections2 and 33 ,pivoted at 34, one of which engages with the labyrinth 2S, and the other of which engages with the labyrinth 29 of the cam 30. To make the lock self-locking, two automatic switches 35 and 36 are included in this device, the said switches being in this instance of a construction identical with that shown in Figs. 1 and 2, to which description reference is made for a full and complete understanding of the same The belt in this instance is provided with upper and lower bosses 37 and 38, against which act the springs 99 which serve to hold the bolt in its locked position.

It will be understood that if the individual combination of the lock is 3, 4, 2, as it would be if the cam disk shown in Fig. 4 is employed, the starting point being indicated at ili, when the knob is operated in this manner, the pin on the connection 32 will travel through the labyrinth of grooves 28 until it reaches the shoulder 14, when the bolt will be retracted. The pin on the connection 33, however, being manifestly improperly operated, will move idly in the labyrinth of grooves 29, and will not interfere in any in anner with the operation of the connection 32 and the retraction of the bolt. In like manner, if the knob is operated on the combination of the labyrinth 29, which in this instance is 2, 3, 2, 3, the starting point being indicated at y, the pin on the connection 33 will then travel through the said lali yrinth and open the lock, without interference from the pin on the connection 32 which being improperly operated plays idlyin the labyrinth of grooves 28.

In order to readily change the combination of the device without the necessity Oil removing the lock from the door, I mount the cam disk or other movable member in cir Figs. 4

.cum'lerential shoulders or other means on the the knob from one side of the said casing in locking engagement with the cam disk. I. then provide means on the opposite side oi the casing adaptml tolollow the turning movements ol the spindle for preventing the outward withdrawal of the said spindle. The particular construction here 'lollowed is shown in Fig. 6, in which the casing is made in two parts, 40 and 4], each of which is provided with circum'lerential shoulders 42 and 43 in apposition to each other. Between these is placed the camdiskwhich is provided with hubs 44 and. 45, which coact with the shoulders on the casing to properly center the cam disk and hold it in position. The hub 44 is provided with radial slots 13 as previously indicated, and the spindle 11 is provided with the pin or key 12 so that when the spindle 1] is inserted through the casing and the cam disk, the said cam disk and spindle and therefore the knob 10 are locked together.

Suitable means are provided for preventing spindle from being pulled out, consisting of a collar 46 which rests in the recess 47 of the port-ion 41, and through which passes a screw 48 into the spindle. The portion 40 is attached to the door in any suitable way, as by means of the screws 49.

It will be understood that by loosening the screw 48, the spindle can be withdrawn out of the lock and turned around a quarter of a turn and inserted again, thereby changing the combination or rather the first number of the combination, inasmuch as the pin 12 then would be in a different set ol radial grooves. This is a great convenience as in this way the combination can be changed without removing the lock from the door.

In order to IOI'HI any combination desired within the limits of the structure of the cam disk, I propose to construct the arbitrary labyrinth o'l' grooves, formed therein, ol groove-portions of a constant configuration, connected by intermediate passages. That is to say, taking either concentric circles, ellipses, a sprial, etc, and drawing the same upon the cam disk, portions 01 the arbitrary labyrinth will be formed by portions of these circles, ellipses or of the spiral. The length of these portions will be determined by the number of unit distances that it is desired to turn the cam in each direction. 'lhese portions will then be connected by intermediate passages, which also bear a fixed relation to the unit of distance.

In Figs. 4 and 5 two dill'erent labyrinths ol grooves are shown developed from the same constant, namely, a spiral. In Fig. 4; is shown a three combinatkin labyrinth, the portions of the constant tain'liguration being indicated respectively by (1 b, c, and (l, which 1 as it will be noted, all follow for a distance casing i'tSOl'f, and insert the spindle carrying &

the curvature of the spiral. Portions a and b are connected by the intermedlate passage I 6, while the portions 7) and c are connected by the intermediate passage f, and the portions 0 and (1 being connected by the intermediate passage 9, which groove (Z leads to the shoulder 14. Extending from each of said portions is a passage forming a misleader, as the passages h, i, and j. These passages preferably should extend in such a manner as to be within the limits of one unit of distance, as indicated in Fig. 4, in which units of distance are shown by straight dotted lines running across the face of the disk.

Turning now our attention to Fig. 5, which may be and is, in the present instance, the master combination cam, it will be seen that placed upon. the same spiral are the portions of constant configuration A, B, (l, D, and E, also connected by intermediate passages, and

having misleaders extending only over one unit of distance. In some instances, on this cam, these portions conform to the curvature of the spiral for a short distance only, but this in nowise sacrifices the principle of the invention, or the ease with which the cam is plotted.

hat is claimed is:

1. In a look, a knob, a bolt, a lever whose pivot is on the bolt, a movable member having a labyrinth of grooves, in which the free end of the lever travels, adapted to be moved by the knob in opposite directions, and means on the said movable member adapted to engage with the said lever when the combination is struck to retract the bolt.

2. In a look, a bolt, a knob, a lever whose pivot is on the bolt, a cam diskhaving a labyrinth of grooves, in which the free end of the lever travels, adapted to be moved by the knob in opposite directions, and means on the said cam disk adapted to engage with the said lever when the combination is struck, to retract the bolt.

S. In a look, a bolt, a knob, a movable member adapted to be operated by turning the knob, a connection carried by the bolt, in constant engagement with the movable member, and responding to the movements thereof without moving the bolt until the combination is struck, and means on the movable member, whereby the movable member and the connection are locked together when the knob is turned in opposite directions a predetermined number of times and a predetermined distance.

4. In a lock, a bolt, a knob, a combination device composed of two members, one of which is carried by the bolt, is in constant engagement with the other member, and responds to the movements thereof, without moving the bolt until the combination is struck, and the oil er member of which is operable by turning the knob to strike the combinatlon, and means on the said other member adapted to engage with the first member to lock the two members together to retract the bolt.

5'. In a lock, a knob, a movable member adapted to be operated by turning the knob, a connection carried by the bolt adapted to play in the movable member when the latter is operated by the knob without moving the bolt until the combination is struck, and means on the said movable member for looking the latter to the connection to retract the bolt when the combination is struck.

6. In a look, a bolt, a knob, a cam disk adapted to be operated by turning the knob, a connection carried by the bolt, in constant engagement with the said cam disk, and responding to the movements thereof without moving the bolt until the combination is struck, and means on the said cam disk, whereby the latter is locked to the connection aforesaid to retract the bolt when the knob is turned in opposite direction a predetermined number of times and a predetermined distance.

7. In a lock, a bolt, a knob, a combination.

device composed of two members, one of which is a lever and the other of which is a cam disk, the said lever being carried by the bolt, in constant engagement with thecam disk, and responding to the movements thereof without moving the bolt until the combination is struck, and the said cam disk being operable by turning the knob to strike the combination, and means on the said cam disk whereby the lever and cam disk are locked together to retract the bolt when the combination is struck. I

8. In a lock, a bolt, a knob, a cam disk adapted to be operated by turning the knob, a connection carried by the bolt adapted to play in the cam disk, when the latter is operated by the knob without moving the bolt until the combination is struck, and means on the said cam disk whereby the latter and the connection are locked together to retract the said bolt when the combination is struck.

ITO

9. In a lock, the combination with a bolt, a

combination device, and means for automatically locking the bolt made operative by retracting the bolt, of a knob and operating means controlling the said bolt, combination device and locking means.

10. In a lock, a bolt, a combination device, means for automatically locking the bolt made operative by retracting the bolt, and a knob, and operating means which, when turned to strike the combination, acts, after striking the combination, progressively to retract and lock the bolt.

11. In a look, a bolt, a combination device, means for automatically locking the bolt made operative by retracting the bolt, and a knob and operating means, which, when turned in opposite directions a predetermined number of times and a predetermined distance, acts progressively to strike'the combination, to retract the bolt, and to lock the bolt.

12. In a look, a bolt, a combination device,

means for automatically locking the bolt made operative by retracting the bolt, and a knob, and operating means which, when turned to strike the combination, acts after striking the combination, to retract the bolt, and when released to lock the bolt.

13. In a lock, a bolt, combination device, means for automatically locking the bolt made operative by retracting the bolt, and a knob and operating means, which, when turned in opposite directions a predetermined number of times and a predetermined distance, acts progressively to strike the co mbination and to retract the bolt, and when released, to lock the bolt.

14. In a look, a belt, a knob, a movable member adapted to be operated by turning the knob, connecting means adapted to be moved in a certain path into operative engagement with the movable member to effect the retraction of the bolt when the knob is turned in 0pposite directions a predetermined number of times and a predetermined distance, a switch for automatically preventing the aforesaid connecting means from returning to its original path, and means for automatically moving the connecting means out of operative engagement with the movable member when the knob is released.

15. In a look, a bolt, a movable member, a connection adapted to travel in engagement with the said movable member, in a certain path, and to lock itself to the same, when moved into operative position, to retract the bolt, a switch adapted to prevent the said connection from returning to its original path after the said connection has been moved into operative position, means for throwing it out of its operative position, and a knob for moving the movable member.

16. In a look, a bolt, a movable member, a connection mounted on the bolt adapted to travel in engagement with the said movable member in a certain path and to lock itself to the same, when moved .into operative position, to retract the bolt, a switch adapted to prevent the said connection from returning to its original path after the said connection has been moved into operative position, means for throwing it out of its operative position, and a knob for moving the said movable member.

17. In a look, a bolt, a movable member having a labyrinth of grooves, a connection adapted to travel through the said grooves in the movable member in a certain path, and to lock itself to the same, when moved into operative position, to retract the bolt, a switch adapted to prevent the said connection from returning to its original path through the labyrinth of grooves after the said connection to travel through said has been moved into operative position, means for throwing it out of its operative position, and a knob for moving the movable member.

18. In a lock, .a belt, a movable member having a labyrinth of grooves, a connection mounted on the bolt adapted. to travel through the said grooves in the movable member in a certain path, and to lock itself to the same, when moved into operative position, to retract the bolt, a switch adapted to prevent the said connection from returning to its original path through the labyrinth of grooves after the said connection has been moved into operative position, means for throwing it out of its operative position, and a knob for moving the movable member.

19. In a lock, a bolt, a cam disk having a labyrinth of grooves, a connection adapted grooves in a certain path, and to lock itself to the same, when moved into operative position, to retract the bolt, a switch adapted to prevent the said connection from returning to its original path through the labyrinth of grooves when the said connection has been moved into operative position, means for throwing it out of its operative position, and a knob for moving the cam disk.

20. In a lock, a bolt, a cam disk having a labyrinth of grooves, a connection mounted on the bolt adapted to travel through said grooves in a certain path, and to lock itself to the same, when moved into operative position, to retract the bolt, a switch adapted to prevent the said connection from returning to its original path through the labyrinth of grooves after the said connection has been moved into operative position, means for throwing it out of its operative position, and a knob for moving the cam disk.

2]. In a lock, a bolt, a spring normally holding said bolt in its locked position, a movable member, a connection adapted to travel in engagement with the said movable member in a certain path and to lock itself to the same, when moved into operative position, to retract the bolt against the pressure of the spring, a switch adapted. to prevent the said connection from returning to its original path after the said connection has been moved into operative position, and a knob for moving the said movable member, and which, when released, after the bolt is retracted, allows the recoil of the spring of the bolt to lock the latter.

22. In a look, a belt, a spring norn'ially holding said bolt in its locked position, a movable member mounted on said bolt, a connection adapted to travel in engagement with the said movable member in a certain path and to lock itself to the same, when moved into operative position, to retract-the bolt against the pressure of the spring, a switch adapted to prevent the said conneetion from returning to its original path after the said connection has been moved into operative position, and a knob for moving the said movable member, and which, when released, after the bolt is retracted, allows the recoil of the spring of the bolt to lock the latter.

23. In a look, a bolt, a spring normally holding said bolt in its locked position, a movable member having a labyrinth of grooves, a connection adapted to travel through the said grooves in the movable member in a certain path, and to lock itself to the same, when moved into operative position, to re tract the bolt against the pressure of the spring, a switch adapted to prevent the said connection from returning to its original path through the labyrinth of grooves after the said connection has been moved into operative position, and a knob for moving the said movable member, and which, when released, after the bolt is retracted, allows the recoil of the spring of the bolt to lock the latter.

24. In a lock, a bolt, a spring normally holding said bolt in its locked position, a movable member having labyrinth of grooves, a connection mounted on the bolt adapted to travel through the said grooves in the movable member in a certain path, and to lock itself to the same, wnen moved into operative position, to retract the bolt against the pressure of the spring, a switch adapted to prevent the said connection from returning to its original path through the labyrinth of grooves after the said connection has been moved into operative position, and a knob for moving the said. movable member, and which, when released, after the bolt is retracted, allows the recoil of the spring of the bolt to lock the latter.

25. In a lock, a bolt, a spring normally holding said bolt in its locked position, a cam disk having a labyrinth of grooves, a connection adapted to travel through. the said grooves in a certain path, and to lock itself to the same, when moved into operative position, to retract the bolt against the pressure of the spring, a switch adapted to prevent the said connection from returning to its original path through the labyrinth of grooves after the said connection has been moved into operative position, and a knob for moving the said cam disk which, when released, after the bolt is retracted, allows the recoil of the spring of the bolt to lock the latter.

26.'In a lock, a bolt, a spring normally holding said bolt in its locked position, a cam disk having a labyrinth of grooves, a connection mounted on the bolt adapted to travel through. the said grooves in a certain path, and to lock itself to the same, when moved into operative position, to retract the bolt against the pressure of the spring, a switch adapted to prevent the said connection from returning to its original path through the labyrinth of grooves alter the said connection has been moved. into operative position, and a knob for moving the said cam disk which, when released, after the bolt is retracted, allows the recoil of the spring of the bolt to lock the latter.

27. In a lock, a bolt, a movable member having a labyrinth. of grooves, a connection having two pins disposed upon its opposite sides, one of which i adapted to travel through the said grooves in a certain path, and to lock itsell" to the said movable memher, when moved into operative position, to retract the bolt, a spring seated switch hav ing means adapted to engage with the other of the said pins carried by the connection to properly hold the first mentioned pin in its operative position with relation to the mov able member, a cam surface on said switch against which the said other pin acts during the retraction of the bolt to move the said switch out of its path, so positioned that when the bolt is retracted the said second pin will have passed beyond the said cam surface, thereby allowing the switch to close behind it so as to prevent the return of the first pin through its original path in the movable member, means for throwing the said connection out of its operative position with the movable member, and a knob for moving the said movable member.

28. In a look, a bolt, a spring normally holding said bolt in its locked position, a movable member having a labyrinth of grooves, a connection hav'ng two pins disposed upon its opposite sides, one of which is adapted to travel through the said grooves in a certain path, and to lock istell? to the said movable member, when moved into operative position, to retract the bolt against the pressure of the spring, a spring seated switch having means adapted to engage with the other of the said pins carried by the connection to properly hold the first mentioned pin in its operative position with relation to the movable member, a cam surface on said switch against which the said other in acts during the retraction of the bolt to move the said switch out of its path, so positioned that when the bolt is retracted the said second pin will have passed beyond the said cam surface, thereby allowing the switch to close behind it so as to prevent the return of the first pin through its original path in the movable member, and a knob for moving the said movable member, and which, when released, after the bolt is retracted, allows the recoil of the spring of the bolt to lock the latter.

29. In a lock, abolt, a movable member having a labyrinth of grooves, a connection having two pins disposed upon its opposite sides, one of which is adapted to travel through the said grooves in a certain path, and to lock itself to the said. movable member, when moved into operative position, to retract the bolt, a spring seated switch having means adapted to engage with the other of the said pins carried by the connection to properly hold the first mentioned pin in its operative position with relation to the movable member, a cam surface on said switch against which the said other pin acts during the retraction of the bolt to move the said switch out of its path, ,so positioned that when the bolt is retracted the said second pin will have passed beyond the said cam surface, thereby allowing the switch to close behind it so as to prevent the return of the first pin through its original path in the movable member, and fixed means for supporting the said second pin after it has passed beyond the cam on the switch so as to properly hold the first pin in its operative position in the movable member, means for throwing the said connection out of its operative position with the movable member, and a knob for moving the said movable member.

30. In a lock, a bolt, a spring normally holding said bolt in its locked position. a movable member having a labyrinth of grooves, a connection having two pins disposed upon its opposite sides, one of which is adapted to travel through the said grooves in a certain path, and to lock itself to the said movable member, when moved into operative position, to retract the bolt against the pressure of the spring, a spring-seated switch having means adapted to engage with the other of the said pins carried by the connection to properly hold the first mentioned pin in its operative position with relation. to the movable member, a cam surface on said switch against which the said other pin acts during the retraction of the bolt to move the said switch out of its path, so positioned that when the bolt is retracted the said second pin will have passed beyond the said cam surface, thereby allowing the switch to close behind it so as to prevent the return of the first pin through its original path in the movable member, fixed means for supporting the said second pin after it has passed beyond the cam on the switch so as to properly hold the first pin in its operative position in the movable member, and a knob for moving the said movable member, and which, when released, after the bolt is retracted, allows the recoil of the spring of the bolt to lock the latter.

31. In a look, a bolt, a movable member having a labyrinth of grooves, a connection having two pins disposed upon its opposite sides, one of which is adapted to travel through the said grooves in a certain path, and to lock itself to the said movable member, when moved into operative position, to retract the belt, a spring seated switch mounted on the casing having means adapt ed to engage with the other of the said. pins carried by the connection to properly the first mentioned pin in its operative position with relation to the movablemember, a cam surface on said switch against which the said other pin acts during the retraction of the bolt to move the said switch out of its path, so positioned that when the bolt is retracted the said second pin will have passed beyond the said cam surface, thereby allowing the switch to close behind it so as to prevent the return of the first pin through. its original path in the movable member, means for throwing the said connection out of its operative position with the movable member, and a knob for moving the said movable member.

32. in a lock, a bolt, a spring normally holding said bolt in its locked position, a

[movable member having a labyrinth of grooves, a connection having two pins disposed upon its opposite sides, one of which is adapted to travel through the said grooves in a certain path, and to lock itself to the said movable member, when moved into operative position, to retract the bolt against the pressure of the spring, a spring-seated switch mounted on the casing having means adapted to engage with the other of the said pins carried by the connection to properly hold the lirst mentioned pin in its operative position with relation to the movable member, a cam surface on said switch against which the said other pin acts during the retraction of the bolt to move the said switch out of its path, so positioned that when the bolt is retracted the said second pin will have passed beyond the said cam surface, thereby allowing the switch to close behind it so as to prevent the return of the first pin through its original path in the movable member, and a knob for moving the said movablemember, and which, when released, after the bolt is retracted, allows the recoil of the spring of the bolt to lock the latter.

33. In a look, a bolt, a movable member having a labyrinth of grooves, a connection having two pins disposed upon its opposite sides, one of which is adapted to travel through the said grooves in a certain path, and to lock itself to the said movable member, when moved into operative position, to retract the bolt, a spring seated switch hav ing means adapted to engage with the other of the said pins carried by the connection to properly hold the ilirst mentioned pin in its operative position with relation to the movable member, a cam surface on said switch against which the said other pin acts during the retraction of the bolt to move the said switch out of its path, so positioned that when the bolt isretractcd the said second pin will have passed beyond the said cam surface, thereby allowing the switch to close behind it so as to prevent the return of the lirst pin through its original path. in the movable hold l member, means for throwing the said connection out of its operative position with the movable member, a knob for moving the said movable member, and fixed means mounted on the casing for supporting the said second pin after it has passed beyond the cam on the switch so as to properly hold the first pin in its operative position. in the movable member.

34. In a look, a bolt, a spring normally holding said bolt in its locked position, a movable member having a labyrinth of grooves, a connection having two pins disposed upon its opposite sides, one of which is adapted to travel through the said grooves in a certain path, and to lock itself to the said movable member, when moved into operative position, to retract the bolt against the pressure of the spring, a spring-seated switch having means adapted to engage with the other of the said pins carried by the connection to properly hold the first mentioned pin in its operative position with relation to the movable member, a cam surface on said switch against which the said other pin acts during the retraction of the bolt to move the said switch out of its path, so positioned that when the bolt is retracted the said second pin will have passed beyond the said cam surface, thereby allowing the switch to close behind it so as to prevent the return of the first pin through its original path in the movable member, fixed means mounted on the casing for supporting the said second pin after it has passed beyond the cam on the switch so as to properly hold the first pin in its operative position in the movable member, and a knob for moving the said movable member, and which, when released, after the bolt is retracted, allows the recoil of the spring of the bolt to lock the latter. 7

35. In a look, a bolt, a cam disk having a labyrinth of grooves, a connection having two pins disposed upon its opposite sides, one of which is adapted to travel through the said grooves in a certain path, and to lock itself to the said cam disk, when moved into operative position, to retract the bolt, a spring seated switch having means adapted to engage with the other of the said pins carried by the connection to properly hold the first mentioned pin in its operative position with relation to the cam disk, a cam surface on said switch against which. the said other pin acts during the retraction of the bolt to move the said switch out of its path, so positioned that when the bolt is retracted the said second'pin will have passed beyond the said cam surface, thereby allowing the switch to close behind it so as to prevent the return of the first pin through its original path in the cam disk, means for throwing the said connection out of its operative position with. the cam disk, and a knob for moving the said cam disk.

36. In a look, a bolt, a spring normally holding said bolt in its locked position, a cam disk having a labyrinth of grooves, a connection having two pins disposed upon its opposite sides, one of which is adapted to travel through the said grooves in a certain path, and to lock itself to the said cam disk, when moved into operative position, to retract the bolt, against the pressure of the spring, a spring seated switch having means adapted to engage with the other of the said pins carried by the connection to properly hold the first mentioned pin in its operative position with relation to the cam disk, a cam surface on said switch against which the said other pin acts during the retraction of the bolt to move the said switch out of its path, so positioned that when the bolt is retracted the said second pin will have passed beyond the said cam surface, thereby allowing the switch to close behind it so as to prevent the return of the first pin through its original path in the cam disk, and a knob for moving the said movable member, and which, when released, after the bolt is retracted, allows the recoil of the spring of the bolt to lock the latter.

37. In a lock, a bolt, a cam disk having a labyrinth of grooves, a connection having two pins disposed upon its opposite sides, one of which is adapted to travel through the said grooves in a certain path, and to lock itself to the said cam disk, when moved into operative position, to retract the bolt, a spring seated switch having means adapted to engage with the other of the said pins car ried by the coimection to properly hold the first mentioned pin in its operative position with relation to the cam disk, a cam surface on said switch against which the said other pin acts during the retraction of the bolt to move the said switch out of its path, so positioned that when the bolt is retracted the said second pin will have passed beyond the said cam surface, thereby allowing the switch to close behind it so as to prevent the return of the first pin through its original path in the cam disk, fixed means for supporting the said second pin after it has passed beyond the cam on the switch so as to properly hold the first pin in its operative position in the cam disk, means for throwing the said connection out of its operative position with the cam disk, and a knob for moving the said cam disk.

38. In a lock, a bolt, a spring normally holding said bolt in its locked position, a cam disk having a labyrinth of grooves, a connection l aving two pins disposed upon its opposite sides, one of which is adapted to travel through the said grooves in a certain path, and to lock itself to the said cam disk, when moved into operative position, to retract the bolt, against the pressure of the spring, a spring seated switch having means adapted to engage with the other of the said. pins carpin acts during the retraction of the bolt to move the said switch out of its path, so positioned that when the bolt is retracted the I said second pin will have passed beyond the said cam surface, thereby allowing the switch to close behind it so as to prevent the return of the first pin through its original path in the cam disk, fixed means for supporting the said second pin after it has passed beyond the cam on the switch so as to properly hold the first pin in its operative position in the cam disk, and a knob for moving the said movable member, and which, when released, after the bolt is retracted, allows the recoil of the spring of the bolt to lock the latter.

39. In a look, a bolt, a cam disk having a labyrinth of grooves, a connection having two pins disposed upon its opposite sides, one ofwhich is adapted to travel through the said grooves in a certain path, and to lock itself to the said cam disk, when moved into operative position, to retract the bolt, a spring seated switch mounted on the casing having means adapted to engage with the other of the said pins carried by the connection to properly hold the first mentioned pin in its operative position with relation to the cam disk, a cam surface on said switch against which the said other pin acts during the retraction of the bolt to move the said switch out of its path, so positioned that when the bolt is retracted the said second pin will have passed beyond the said cam surface, thereby allowing the switch to close behind it so as to prevent the return of the first pin through its original path in the cam disk, means for throwing the said connection out of its operative position with the cam disk, and a knob for moving the said cam disk.

40. In a lock, a bolt, a spring normally holding said bolt in its locked position, a cam disk having a labyrinth of grooves, a connection having two pins disposed upon its opposite sides, one of which is adapted to travel through the said grooves in a certain path, and to lockitself to the said cam disk, when moved into operative position, to retract the bolt, against the pressure of the spring, a spring seated switch mounted on the casing having means adapted to engage with the other of the said pins carried by the connection to properly hold the first mentioned pin in its operative position with relation to the cam .disk, a cam surface on said switch against which the said other pin acts during the retraction of the bolt to move the said switch out of its path, so positioned that when the bolt is retracted the said second pin will have passed beyond the said cam surface, thereby allowing the switch to close behind it so as to prevent the return of the first pin through its original path in the cam disk, and a knob for me ving the said movable member, and which, when released, after the bolt is retracted, allows the recoil of the spring of the bolt to lock the latter.

41. In a lock, a belt, a cam disk having a labyrinth of grooves, a connection having two pins disposed upon its opposite sides, one of which is adapted to travel through the said grooves in a certain path, and to lock itself to the said cam disk, when moved into operative position, to retract the bolt, a spring seated switch having means adapted to engage with the other of the said pins carried by the connection to properly hold the first mentioned pin in its operative position with relation to the cam disk, a cam surface on said switch against which the said other pin acts during the retraction of the bolt to move the said switch out of its path, so positioned that when the bolt is retracted the said second pin will have passed beyond the said cam surface, thereby allowing the switch to close behind it so as to prevent the return of the first pin through its original path in the cam disk, .means for throwing the said connection out of its operative position with the cam disk, a knob for moving the said cam disk, and fixed means mounted on the casing, for supporting the said second pin after it has passed beyond the cam on the switch, so as to properly hold the first pin in its operative position in the cam disk.

42. In a look, a bolt, a spring normally holding said bolt in its locked position, a cam disk having a labyrinth of grooves, a connection having two pins disposed upon its opposite sides, one of which is adapted to travel through the said grooves in a certain path, and to lock itself to the said cam disk, when moved into operative position, to retract the bolt, against the pressure of the spring, a spring seated switch having means adapted to engage with the other of the said pins carried by the connection to properly hold the first mentioned pin it its operative position with relation to the cam disk, a cam surface on said switch against which the said other pin acts during the retraction of the bolt to move the said switch out of its path, so positioned that when the bolt is retracted the said second pin will have passed beyond the said cam surface, thereby allowing the switch to close behind it so as to prevent the return of the first pin through its original path in the cam. disk, fixed means mounted on the casing, for supporting the said second pin after it has passed beyond the cam on the switch so as to properly hold the first pin in its operative position in the cam disk, and a knob for moving the said movable member, and which, when released, after the bolt is retracted, allows the recoil of the spring of the bolt to lock the latter.

43. In a lock, a bolt, and a combination means adapted to be positioned to retract the bolt by either of two different combinations.

44. In a lock, the combination of a bolt, and a combination means adapted to be positioned to retract the bolt by either of two different combinations from the same side of the door.

45. In a look, a bolt, a combination device, a master combination device, and a knob adapted to retract the bolt when turned to find either the combination device or the master combination device.

46. In alock, a bolt, a knob, means adapted to be operated by said knob, having two labyrinths of grooves different from each other in their combination, connections controlling the bolt adapted to travel in engagement with said labyrinths of grooves, whereby when the knob is turned on either combi nation, the bolt can be retracted.

47. In a lock, a bolt, a knob, a movable member adapted to be operated by said knob having two labyrinths of grooves, different from each other, connections controlling the bolt adapted to travel in said labyrinths of grooves whereby when the knob is operated on either combination, the bolt may be retracted.

48. In a look, a bolt, a knob, a cam disk adapted to be operated by turning the knob and provided with two labyrinths of grooves, different from each other, one on each side, and connections controlling the bolt adapted to travel in said labyrinths of grooves, whereby when the knob is turned on either combination, the bolt can be retracted.

49. In a combination lock, whose combination is found by turning the knob in opposite directions a predetermined number of times and a predetermined distance, a bolt, a

' knob, and combination means adapted to be operated by either of two combinations of turns of the knob.

50. In a combination lock, whose combination is found by turning the knob in opposite directions a predetermined number of times and a predetermined distance, a bolt, a knob, and combination means adapted to be operated by either of two combinations of turns of the knob from the same side of the door.

51. In a look, a cam disk, having a labyrinth of grooves composed of portions of constant configuration connected by intermediate passages.

52. In a look, a cam disk having a labyrinth of grooves composed of portions of constant configuration connected by intermediate passages, and passages for misleading purposes, also connecting said portions of constant configuration.

53. In a lock, a cam disk having a labyrinth of groovescomposed of portions of a spiral connected by intermediate passages.

54. In a lock, a cam disk having a labyrinth of grooves, composed of portions of a spiral connected by intermediate passages, and passages for misleading purposes also connecting the said spiral portions.

55. In a look, a bolt, a knob, a cam disk adapted to be operated by the rotation of the knob, having a labyrinth of grooves having depressions below the normal level of the grooves at certain intervals, a connection controlling the bolt having a pin adapted to travel in said grooves, tapered surfaces in said grooves whose summits are adjacent to the depressions below the normal level of the grooves, whereby when the pin travels beyond the summit of the tapered surfaces it will fall into the depressions below the normal level of the grooves.

56. In a lock of the character described, the combination of a casing, a movable member rotatably supported in said casing, a knob having a spindle extending from one side of the casing through the same and through the said movable member in locked engagement therewith, and means on the opposite side of the casing adapted to follow the movement of the spindle for preventing the outward withdrawal of the said spindle.

57. In a lock of the character described, the combination of a casing, a movable member rotatably supported in said casing, a knob having a spindle extending from one side of the casing through the same and through the said movable member, means for locking the spindle and movable member together in different circumferential positions with relation to each other, and means on the opposite side of the casing adapted to follow the movement of the spindle for preventing the outward withdrawal of the said spindle.

58. In a lock of the character described, the combination of a casing, a cam disk rotatably supported in said casing, a knob having a spindle extending from one side of the said casing through the same and through the cam disk, and means on the other side of the casing adapted to follow the movements of the spindle for preventing the outward withdrawal of the said spindle.

59. In a lock of the character described, the combination of a casing, a cam disk rotatably supported in said casing, a knob having a spindle adapted to be inserted from one side of the casing through the same and through the cam disk, means for locking the spindle and the cam disk together in different circumferential positions with relation to each other, and means on the other side of the casing adapted to follow the turning movement of the spindle for preventing the outward withdrawal of the said spindle.

60. In a lock of the character described, the combination of a casing, a bolt movable in said casing, a movable member rotatably supported in said casing, a connection in engagement with the said movable member controlling the retraction of the'bolt, a knob having a spindle extending from one side of the casing through the same and. through the said movable member and in locked engagement therewith, and means on the opposite side of the casing adapted to follow the movement of the spindle for preventing the outward withdrawal of the said spindle.

61. In a lock, a bolt, a combination device, a master combination device, a knob and op erating means adapted to retract the bolt when turned to find either the combination device or the master combination device, and means for automatically locking the bolt when retracted by either of the two combi nation devices.

62. In a lock of the character described, the combination of a casing, a bolt movable in said casing, a movable member rotatably supported in said casing, a connection in engagement with the said movable member controlling the retraction of the bolt, a knob having a spindle extending from one side of the casing through the same and through the said movable member, means for locking the spindle and movable member together in diflerent circumferential positions with relation to each other, and means on the opposite side of the casing adapted to follow the movement ol the spindle for preventing the outward withdrawal of the said spindle.

63. In a lock of the character described, the combination of a casing, a bolt movable in said casing, a cam disk rotatably supported in said casing, a connection in engagement with the said cam disk controlling the retraction of the belt, a knob having a spindle extending from one side of the casing through the same and through the said cam disk and in locked engagement therewith, and means on the opposite side of the casing adapted to follow the movement of the spindle for preventing the outward withdrawal of the said spindle.

Signed at New York tober, 1905.

this 31st day of Oc- FRED J. VIEWEG.

WVitnesses:

AXEL V. BEEKER, GEO. A. HOFFMAN. 

